The European Union’s top court has upheld a €4.1 billion antitrust fine against Google, rejecting the company’s appeal in a long-running legal battle. The ruling, delivered on Thursday, confirmed that Google and its parent company Alphabet misused their dominant position in the Android operating system to promote Google Search unfairly. The decision marks a significant setback for the U.S. technology giant after years of litigation.

The case originated in 2018 when the European Commission accused Google of anti-competitive behavior by requiring smartphone manufacturers to pre-install Google Search and Chrome through licensing and pre-installation agreements. The Commission initially imposed a €4.34 billion fine, later reduced by a lower court to €4.125 billion while maintaining the core finding of abuse of dominance.

In its final judgment, the EU Court of Justice stated that the lower court had not misinterpreted the law. It found that Google’s pre-installation and anti-fragmentation agreements restricted competition and hindered new market entrants. The court also dismissed Google’s argument that its market position resulted solely from user preference or product quality.